TSTP Solution File: SET081-6 by Bliksem---1.12

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Bliksem---1.12
% Problem  : SET081-6 : TPTP v8.1.0. Bugfixed v2.1.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : bliksem %s

% Computer : n014.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 0s
% DateTime : Mon Jul 18 22:46:43 EDT 2022

% Result   : Unsatisfiable 1.28s 1.65s
% Output   : Refutation 1.28s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.12  % Problem  : SET081-6 : TPTP v8.1.0. Bugfixed v2.1.0.
% 0.03/0.12  % Command  : bliksem %s
% 0.11/0.33  % Computer : n014.cluster.edu
% 0.11/0.33  % Model    : x86_64 x86_64
% 0.11/0.33  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.33  % Memory   : 8042.1875MB
% 0.11/0.33  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.11/0.33  % CPULimit : 300
% 0.11/0.33  % DateTime : Mon Jul 11 09:45:04 EDT 2022
% 0.11/0.33  % CPUTime  : 
% 0.71/1.11  *** allocated 10000 integers for termspace/termends
% 0.71/1.11  *** allocated 10000 integers for clauses
% 0.71/1.11  *** allocated 10000 integers for justifications
% 0.71/1.11  Bliksem 1.12
% 0.71/1.11  
% 0.71/1.11  
% 0.71/1.11  Automatic Strategy Selection
% 0.71/1.11  
% 0.71/1.11  Clauses:
% 0.71/1.11  [
% 0.71/1.11     [ ~( subclass( X, Y ) ), ~( member( Z, X ) ), member( Z, Y ) ],
% 0.71/1.11     [ member( 'not_subclass_element'( X, Y ), X ), subclass( X, Y ) ],
% 0.71/1.11     [ ~( member( 'not_subclass_element'( X, Y ), Y ) ), subclass( X, Y ) ]
% 0.71/1.11    ,
% 0.71/1.11     [ subclass( X, 'universal_class' ) ],
% 0.71/1.11     [ ~( =( X, Y ) ), subclass( X, Y ) ],
% 0.71/1.11     [ ~( =( X, Y ) ), subclass( Y, X ) ],
% 0.71/1.11     [ ~( subclass( X, Y ) ), ~( subclass( Y, X ) ), =( X, Y ) ],
% 0.71/1.11     [ ~( member( X, 'unordered_pair'( Y, Z ) ) ), =( X, Y ), =( X, Z ) ]
% 0.71/1.11    ,
% 0.71/1.11     [ ~( member( X, 'universal_class' ) ), member( X, 'unordered_pair'( X, Y
% 0.71/1.11     ) ) ],
% 0.71/1.11     [ ~( member( X, 'universal_class' ) ), member( X, 'unordered_pair'( Y, X
% 0.71/1.11     ) ) ],
% 0.71/1.11     [ member( 'unordered_pair'( X, Y ), 'universal_class' ) ],
% 0.71/1.11     [ =( 'unordered_pair'( X, X ), singleton( X ) ) ],
% 0.71/1.11     [ =( 'unordered_pair'( singleton( X ), 'unordered_pair'( X, singleton( Y
% 0.71/1.11     ) ) ), 'ordered_pair'( X, Y ) ) ],
% 0.71/1.11     [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( Z, T ) ) ), member( 
% 0.71/1.11    X, Z ) ],
% 0.71/1.11     [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( Z, T ) ) ), member( 
% 0.71/1.11    Y, T ) ],
% 0.71/1.11     [ ~( member( X, Y ) ), ~( member( Z, T ) ), member( 'ordered_pair'( X, Z
% 0.71/1.11     ), 'cross_product'( Y, T ) ) ],
% 0.71/1.11     [ ~( member( X, 'cross_product'( Y, Z ) ) ), =( 'ordered_pair'( first( X
% 0.71/1.11     ), second( X ) ), X ) ],
% 0.71/1.11     [ subclass( 'element_relation', 'cross_product'( 'universal_class', 
% 0.71/1.11    'universal_class' ) ) ],
% 0.71/1.11     [ ~( member( 'ordered_pair'( X, Y ), 'element_relation' ) ), member( X, 
% 0.71/1.11    Y ) ],
% 0.71/1.11     [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( 'universal_class'
% 0.71/1.11    , 'universal_class' ) ) ), ~( member( X, Y ) ), member( 'ordered_pair'( X
% 0.71/1.11    , Y ), 'element_relation' ) ],
% 0.71/1.11     [ ~( member( X, intersection( Y, Z ) ) ), member( X, Y ) ],
% 0.71/1.11     [ ~( member( X, intersection( Y, Z ) ) ), member( X, Z ) ],
% 0.71/1.11     [ ~( member( X, Y ) ), ~( member( X, Z ) ), member( X, intersection( Y, 
% 0.71/1.11    Z ) ) ],
% 0.71/1.11     [ ~( member( X, complement( Y ) ) ), ~( member( X, Y ) ) ],
% 0.71/1.11     [ ~( member( X, 'universal_class' ) ), member( X, complement( Y ) ), 
% 0.71/1.11    member( X, Y ) ],
% 0.71/1.11     [ =( complement( intersection( complement( X ), complement( Y ) ) ), 
% 0.71/1.11    union( X, Y ) ) ],
% 0.71/1.11     [ =( intersection( complement( intersection( X, Y ) ), complement( 
% 0.71/1.11    intersection( complement( X ), complement( Y ) ) ) ), 
% 0.71/1.11    'symmetric_difference'( X, Y ) ) ],
% 0.71/1.11     [ =( intersection( X, 'cross_product'( Y, Z ) ), restrict( X, Y, Z ) ) ]
% 0.71/1.11    ,
% 0.71/1.11     [ =( intersection( 'cross_product'( X, Y ), Z ), restrict( Z, X, Y ) ) ]
% 0.71/1.11    ,
% 0.71/1.11     [ ~( =( restrict( X, singleton( Y ), 'universal_class' ), 'null_class' )
% 0.71/1.11     ), ~( member( Y, 'domain_of'( X ) ) ) ],
% 0.71/1.11     [ ~( member( X, 'universal_class' ) ), =( restrict( Y, singleton( X ), 
% 0.71/1.11    'universal_class' ), 'null_class' ), member( X, 'domain_of'( Y ) ) ],
% 0.71/1.11     [ subclass( rotate( X ), 'cross_product'( 'cross_product'( 
% 0.71/1.11    'universal_class', 'universal_class' ), 'universal_class' ) ) ],
% 0.71/1.11     [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), rotate( T ) )
% 0.71/1.11     ), member( 'ordered_pair'( 'ordered_pair'( Y, Z ), X ), T ) ],
% 0.71/1.11     [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), T ) ), ~( 
% 0.71/1.11    member( 'ordered_pair'( 'ordered_pair'( Z, X ), Y ), 'cross_product'( 
% 0.71/1.11    'cross_product'( 'universal_class', 'universal_class' ), 
% 0.71/1.11    'universal_class' ) ) ), member( 'ordered_pair'( 'ordered_pair'( Z, X ), 
% 0.71/1.11    Y ), rotate( T ) ) ],
% 0.71/1.11     [ subclass( flip( X ), 'cross_product'( 'cross_product'( 
% 0.71/1.11    'universal_class', 'universal_class' ), 'universal_class' ) ) ],
% 0.71/1.11     [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), flip( T ) ) )
% 0.71/1.11    , member( 'ordered_pair'( 'ordered_pair'( Y, X ), Z ), T ) ],
% 0.71/1.11     [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), T ) ), ~( 
% 0.71/1.11    member( 'ordered_pair'( 'ordered_pair'( Y, X ), Z ), 'cross_product'( 
% 0.71/1.11    'cross_product'( 'universal_class', 'universal_class' ), 
% 0.71/1.11    'universal_class' ) ) ), member( 'ordered_pair'( 'ordered_pair'( Y, X ), 
% 0.71/1.11    Z ), flip( T ) ) ],
% 0.71/1.11     [ =( 'domain_of'( flip( 'cross_product'( X, 'universal_class' ) ) ), 
% 0.71/1.11    inverse( X ) ) ],
% 0.71/1.11     [ =( 'domain_of'( inverse( X ) ), 'range_of'( X ) ) ],
% 0.71/1.11     [ =( first( 'not_subclass_element'( restrict( X, Y, singleton( Z ) ), 
% 0.71/1.11    'null_class' ) ), domain( X, Y, Z ) ) ],
% 0.71/1.11     [ =( second( 'not_subclass_element'( restrict( X, singleton( Y ), Z ), 
% 0.71/1.11    'null_class' ) ), range( X, Y, Z ) ) ],
% 0.71/1.11     [ =( 'range_of'( restrict( X, Y, 'universal_class' ) ), image( X, Y ) )
% 0.71/1.11     ],
% 0.71/1.11     [ =( union( X, singleton( X ) ), successor( X ) ) ],
% 0.71/1.11     [ subclass( 'successor_relation', 'cross_product'( 'universal_class', 
% 0.71/1.11    'universal_class' ) ) ],
% 0.71/1.11     [ ~( member( 'ordered_pair'( X, Y ), 'successor_relation' ) ), =( 
% 0.71/1.11    successor( X ), Y ) ],
% 0.71/1.11     [ ~( =( successor( X ), Y ) ), ~( member( 'ordered_pair'( X, Y ), 
% 0.71/1.11    'cross_product'( 'universal_class', 'universal_class' ) ) ), member( 
% 0.71/1.11    'ordered_pair'( X, Y ), 'successor_relation' ) ],
% 0.71/1.11     [ ~( inductive( X ) ), member( 'null_class', X ) ],
% 0.71/1.11     [ ~( inductive( X ) ), subclass( image( 'successor_relation', X ), X ) ]
% 0.71/1.11    ,
% 0.71/1.11     [ ~( member( 'null_class', X ) ), ~( subclass( image( 
% 0.71/1.11    'successor_relation', X ), X ) ), inductive( X ) ],
% 0.71/1.11     [ inductive( omega ) ],
% 0.71/1.11     [ ~( inductive( X ) ), subclass( omega, X ) ],
% 0.71/1.11     [ member( omega, 'universal_class' ) ],
% 0.71/1.11     [ =( 'domain_of'( restrict( 'element_relation', 'universal_class', X ) )
% 0.71/1.11    , 'sum_class'( X ) ) ],
% 0.71/1.11     [ ~( member( X, 'universal_class' ) ), member( 'sum_class'( X ), 
% 0.71/1.11    'universal_class' ) ],
% 0.71/1.11     [ =( complement( image( 'element_relation', complement( X ) ) ), 
% 0.71/1.11    'power_class'( X ) ) ],
% 0.71/1.11     [ ~( member( X, 'universal_class' ) ), member( 'power_class'( X ), 
% 0.71/1.11    'universal_class' ) ],
% 0.71/1.11     [ subclass( compose( X, Y ), 'cross_product'( 'universal_class', 
% 0.71/1.11    'universal_class' ) ) ],
% 0.71/1.11     [ ~( member( 'ordered_pair'( X, Y ), compose( Z, T ) ) ), member( Y, 
% 0.71/1.11    image( Z, image( T, singleton( X ) ) ) ) ],
% 0.71/1.11     [ ~( member( X, image( Y, image( Z, singleton( T ) ) ) ) ), ~( member( 
% 0.71/1.11    'ordered_pair'( T, X ), 'cross_product'( 'universal_class', 
% 0.71/1.11    'universal_class' ) ) ), member( 'ordered_pair'( T, X ), compose( Y, Z )
% 0.71/1.11     ) ],
% 0.71/1.11     [ ~( 'single_valued_class'( X ) ), subclass( compose( X, inverse( X ) )
% 0.71/1.11    , 'identity_relation' ) ],
% 0.71/1.11     [ ~( subclass( compose( X, inverse( X ) ), 'identity_relation' ) ), 
% 0.71/1.11    'single_valued_class'( X ) ],
% 0.71/1.11     [ ~( function( X ) ), subclass( X, 'cross_product'( 'universal_class', 
% 0.71/1.11    'universal_class' ) ) ],
% 0.71/1.11     [ ~( function( X ) ), subclass( compose( X, inverse( X ) ), 
% 0.71/1.11    'identity_relation' ) ],
% 0.71/1.11     [ ~( subclass( X, 'cross_product'( 'universal_class', 'universal_class'
% 0.71/1.11     ) ) ), ~( subclass( compose( X, inverse( X ) ), 'identity_relation' ) )
% 0.71/1.11    , function( X ) ],
% 0.71/1.11     [ ~( function( X ) ), ~( member( Y, 'universal_class' ) ), member( image( 
% 0.71/1.11    X, Y ), 'universal_class' ) ],
% 0.71/1.11     [ =( X, 'null_class' ), member( regular( X ), X ) ],
% 0.71/1.11     [ =( X, 'null_class' ), =( intersection( X, regular( X ) ), 'null_class'
% 0.71/1.11     ) ],
% 0.71/1.11     [ =( 'sum_class'( image( X, singleton( Y ) ) ), apply( X, Y ) ) ],
% 0.71/1.11     [ function( choice ) ],
% 0.71/1.11     [ ~( member( X, 'universal_class' ) ), =( X, 'null_class' ), member( 
% 0.71/1.11    apply( choice, X ), X ) ],
% 0.71/1.11     [ ~( 'one_to_one'( X ) ), function( X ) ],
% 0.71/1.11     [ ~( 'one_to_one'( X ) ), function( inverse( X ) ) ],
% 0.71/1.11     [ ~( function( inverse( X ) ) ), ~( function( X ) ), 'one_to_one'( X ) ]
% 0.71/1.11    ,
% 0.71/1.11     [ =( intersection( 'cross_product'( 'universal_class', 'universal_class'
% 0.71/1.11     ), intersection( 'cross_product'( 'universal_class', 'universal_class' )
% 0.71/1.11    , complement( compose( complement( 'element_relation' ), inverse( 
% 0.71/1.11    'element_relation' ) ) ) ) ), 'subset_relation' ) ],
% 0.71/1.11     [ =( intersection( inverse( 'subset_relation' ), 'subset_relation' ), 
% 0.71/1.11    'identity_relation' ) ],
% 0.71/1.11     [ =( complement( 'domain_of'( intersection( X, 'identity_relation' ) ) )
% 0.71/1.11    , diagonalise( X ) ) ],
% 0.71/1.11     [ =( intersection( 'domain_of'( X ), diagonalise( compose( inverse( 
% 0.71/1.11    'element_relation' ), X ) ) ), cantor( X ) ) ],
% 0.71/1.11     [ ~( operation( X ) ), function( X ) ],
% 0.71/1.11     [ ~( operation( X ) ), =( 'cross_product'( 'domain_of'( 'domain_of'( X )
% 0.71/1.11     ), 'domain_of'( 'domain_of'( X ) ) ), 'domain_of'( X ) ) ],
% 0.71/1.11     [ ~( operation( X ) ), subclass( 'range_of'( X ), 'domain_of'( 
% 1.28/1.65    'domain_of'( X ) ) ) ],
% 1.28/1.65     [ ~( function( X ) ), ~( =( 'cross_product'( 'domain_of'( 'domain_of'( X
% 1.28/1.65     ) ), 'domain_of'( 'domain_of'( X ) ) ), 'domain_of'( X ) ) ), ~( 
% 1.28/1.65    subclass( 'range_of'( X ), 'domain_of'( 'domain_of'( X ) ) ) ), operation( 
% 1.28/1.65    X ) ],
% 1.28/1.65     [ ~( compatible( X, Y, Z ) ), function( X ) ],
% 1.28/1.65     [ ~( compatible( X, Y, Z ) ), =( 'domain_of'( 'domain_of'( Y ) ), 
% 1.28/1.65    'domain_of'( X ) ) ],
% 1.28/1.65     [ ~( compatible( X, Y, Z ) ), subclass( 'range_of'( X ), 'domain_of'( 
% 1.28/1.65    'domain_of'( Z ) ) ) ],
% 1.28/1.65     [ ~( function( X ) ), ~( =( 'domain_of'( 'domain_of'( Y ) ), 'domain_of'( 
% 1.28/1.65    X ) ) ), ~( subclass( 'range_of'( X ), 'domain_of'( 'domain_of'( Z ) ) )
% 1.28/1.65     ), compatible( X, Y, Z ) ],
% 1.28/1.65     [ ~( homomorphism( X, Y, Z ) ), operation( Y ) ],
% 1.28/1.65     [ ~( homomorphism( X, Y, Z ) ), operation( Z ) ],
% 1.28/1.65     [ ~( homomorphism( X, Y, Z ) ), compatible( X, Y, Z ) ],
% 1.28/1.65     [ ~( homomorphism( X, Y, Z ) ), ~( member( 'ordered_pair'( T, U ), 
% 1.28/1.65    'domain_of'( Y ) ) ), =( apply( Z, 'ordered_pair'( apply( X, T ), apply( 
% 1.28/1.65    X, U ) ) ), apply( X, apply( Y, 'ordered_pair'( T, U ) ) ) ) ],
% 1.28/1.65     [ ~( operation( X ) ), ~( operation( Y ) ), ~( compatible( Z, X, Y ) ), 
% 1.28/1.65    member( 'ordered_pair'( 'not_homomorphism1'( Z, X, Y ), 
% 1.28/1.65    'not_homomorphism2'( Z, X, Y ) ), 'domain_of'( X ) ), homomorphism( Z, X
% 1.28/1.65    , Y ) ],
% 1.28/1.65     [ ~( operation( X ) ), ~( operation( Y ) ), ~( compatible( Z, X, Y ) ), 
% 1.28/1.65    ~( =( apply( Y, 'ordered_pair'( apply( Z, 'not_homomorphism1'( Z, X, Y )
% 1.28/1.65     ), apply( Z, 'not_homomorphism2'( Z, X, Y ) ) ) ), apply( Z, apply( X, 
% 1.28/1.65    'ordered_pair'( 'not_homomorphism1'( Z, X, Y ), 'not_homomorphism2'( Z, X
% 1.28/1.65    , Y ) ) ) ) ) ), homomorphism( Z, X, Y ) ],
% 1.28/1.65     [ member( y, singleton( x ) ) ],
% 1.28/1.65     [ ~( =( y, x ) ) ]
% 1.28/1.65  ] .
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  percentage equality = 0.218579, percentage horn = 0.913978
% 1.28/1.65  This is a problem with some equality
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  Options Used:
% 1.28/1.65  
% 1.28/1.65  useres =            1
% 1.28/1.65  useparamod =        1
% 1.28/1.65  useeqrefl =         1
% 1.28/1.65  useeqfact =         1
% 1.28/1.65  usefactor =         1
% 1.28/1.65  usesimpsplitting =  0
% 1.28/1.65  usesimpdemod =      5
% 1.28/1.65  usesimpres =        3
% 1.28/1.65  
% 1.28/1.65  resimpinuse      =  1000
% 1.28/1.65  resimpclauses =     20000
% 1.28/1.65  substype =          eqrewr
% 1.28/1.65  backwardsubs =      1
% 1.28/1.65  selectoldest =      5
% 1.28/1.65  
% 1.28/1.65  litorderings [0] =  split
% 1.28/1.65  litorderings [1] =  extend the termordering, first sorting on arguments
% 1.28/1.65  
% 1.28/1.65  termordering =      kbo
% 1.28/1.65  
% 1.28/1.65  litapriori =        0
% 1.28/1.65  termapriori =       1
% 1.28/1.65  litaposteriori =    0
% 1.28/1.65  termaposteriori =   0
% 1.28/1.65  demodaposteriori =  0
% 1.28/1.65  ordereqreflfact =   0
% 1.28/1.65  
% 1.28/1.65  litselect =         negord
% 1.28/1.65  
% 1.28/1.65  maxweight =         15
% 1.28/1.65  maxdepth =          30000
% 1.28/1.65  maxlength =         115
% 1.28/1.65  maxnrvars =         195
% 1.28/1.65  excuselevel =       1
% 1.28/1.65  increasemaxweight = 1
% 1.28/1.65  
% 1.28/1.65  maxselected =       10000000
% 1.28/1.65  maxnrclauses =      10000000
% 1.28/1.65  
% 1.28/1.65  showgenerated =    0
% 1.28/1.65  showkept =         0
% 1.28/1.65  showselected =     0
% 1.28/1.65  showdeleted =      0
% 1.28/1.65  showresimp =       1
% 1.28/1.65  showstatus =       2000
% 1.28/1.65  
% 1.28/1.65  prologoutput =     1
% 1.28/1.65  nrgoals =          5000000
% 1.28/1.65  totalproof =       1
% 1.28/1.65  
% 1.28/1.65  Symbols occurring in the translation:
% 1.28/1.65  
% 1.28/1.65  {}  [0, 0]      (w:1, o:2, a:1, s:1, b:0), 
% 1.28/1.65  .  [1, 2]      (w:1, o:56, a:1, s:1, b:0), 
% 1.28/1.65  !  [4, 1]      (w:0, o:31, a:1, s:1, b:0), 
% 1.28/1.65  =  [13, 2]      (w:1, o:0, a:0, s:1, b:0), 
% 1.28/1.65  ==>  [14, 2]      (w:1, o:0, a:0, s:1, b:0), 
% 1.28/1.65  subclass  [41, 2]      (w:1, o:81, a:1, s:1, b:0), 
% 1.28/1.65  member  [43, 2]      (w:1, o:82, a:1, s:1, b:0), 
% 1.28/1.65  'not_subclass_element'  [44, 2]      (w:1, o:83, a:1, s:1, b:0), 
% 1.28/1.65  'universal_class'  [45, 0]      (w:1, o:21, a:1, s:1, b:0), 
% 1.28/1.65  'unordered_pair'  [46, 2]      (w:1, o:84, a:1, s:1, b:0), 
% 1.28/1.65  singleton  [47, 1]      (w:1, o:39, a:1, s:1, b:0), 
% 1.28/1.65  'ordered_pair'  [48, 2]      (w:1, o:85, a:1, s:1, b:0), 
% 1.28/1.65  'cross_product'  [50, 2]      (w:1, o:86, a:1, s:1, b:0), 
% 1.28/1.65  first  [52, 1]      (w:1, o:40, a:1, s:1, b:0), 
% 1.28/1.65  second  [53, 1]      (w:1, o:41, a:1, s:1, b:0), 
% 1.28/1.65  'element_relation'  [54, 0]      (w:1, o:25, a:1, s:1, b:0), 
% 1.28/1.65  intersection  [55, 2]      (w:1, o:88, a:1, s:1, b:0), 
% 1.28/1.65  complement  [56, 1]      (w:1, o:42, a:1, s:1, b:0), 
% 1.28/1.65  union  [57, 2]      (w:1, o:89, a:1, s:1, b:0), 
% 1.28/1.65  'symmetric_difference'  [58, 2]      (w:1, o:90, a:1, s:1, b:0), 
% 1.28/1.65  restrict  [60, 3]      (w:1, o:93, a:1, s:1, b:0), 
% 1.28/1.65  'null_class'  [61, 0]      (w:1, o:26, a:1, s:1, b:0), 
% 1.28/1.65  'domain_of'  [62, 1]      (w:1, o:44, a:1, s:1, b:0), 
% 1.28/1.65  rotate  [63, 1]      (w:1, o:36, a:1, s:1, b:0), 
% 1.28/1.65  flip  [65, 1]      (w:1, o:45, a:1, s:1, b:0), 
% 1.28/1.65  inverse  [66, 1]      (w:1, o:46, a:1, s:1, b:0), 
% 1.28/1.65  'range_of'  [67, 1]      (w:1, o:37, a:1, s:1, b:0), 
% 1.28/1.65  domain  [68, 3]      (w:1, o:95, a:1, s:1, b:0), 
% 1.28/1.65  range  [69, 3]      (w:1, o:96, a:1, s:1, b:0), 
% 1.28/1.65  image  [70, 2]      (w:1, o:87, a:1, s:1, b:0), 
% 1.28/1.65  successor  [71, 1]      (w:1, o:47, a:1, s:1, b:0), 
% 1.28/1.65  'successor_relation'  [72, 0]      (w:1, o:6, a:1, s:1, b:0), 
% 1.28/1.65  inductive  [73, 1]      (w:1, o:48, a:1, s:1, b:0), 
% 1.28/1.65  omega  [74, 0]      (w:1, o:9, a:1, s:1, b:0), 
% 1.28/1.65  'sum_class'  [75, 1]      (w:1, o:49, a:1, s:1, b:0), 
% 1.28/1.65  'power_class'  [76, 1]      (w:1, o:52, a:1, s:1, b:0), 
% 1.28/1.65  compose  [78, 2]      (w:1, o:91, a:1, s:1, b:0), 
% 1.28/1.65  'single_valued_class'  [79, 1]      (w:1, o:53, a:1, s:1, b:0), 
% 1.28/1.65  'identity_relation'  [80, 0]      (w:1, o:27, a:1, s:1, b:0), 
% 1.28/1.65  function  [82, 1]      (w:1, o:54, a:1, s:1, b:0), 
% 1.28/1.65  regular  [83, 1]      (w:1, o:38, a:1, s:1, b:0), 
% 1.28/1.65  apply  [84, 2]      (w:1, o:92, a:1, s:1, b:0), 
% 1.28/1.65  choice  [85, 0]      (w:1, o:28, a:1, s:1, b:0), 
% 1.28/1.65  'one_to_one'  [86, 1]      (w:1, o:50, a:1, s:1, b:0), 
% 1.28/1.65  'subset_relation'  [87, 0]      (w:1, o:5, a:1, s:1, b:0), 
% 1.28/1.65  diagonalise  [88, 1]      (w:1, o:55, a:1, s:1, b:0), 
% 1.28/1.65  cantor  [89, 1]      (w:1, o:43, a:1, s:1, b:0), 
% 1.28/1.65  operation  [90, 1]      (w:1, o:51, a:1, s:1, b:0), 
% 1.28/1.65  compatible  [94, 3]      (w:1, o:94, a:1, s:1, b:0), 
% 1.28/1.65  homomorphism  [95, 3]      (w:1, o:97, a:1, s:1, b:0), 
% 1.28/1.65  'not_homomorphism1'  [96, 3]      (w:1, o:98, a:1, s:1, b:0), 
% 1.28/1.65  'not_homomorphism2'  [97, 3]      (w:1, o:99, a:1, s:1, b:0), 
% 1.28/1.65  y  [98, 0]      (w:1, o:30, a:1, s:1, b:0), 
% 1.28/1.65  x  [99, 0]      (w:1, o:29, a:1, s:1, b:0).
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  Starting Search:
% 1.28/1.65  
% 1.28/1.65  Resimplifying inuse:
% 1.28/1.65  Done
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  Intermediate Status:
% 1.28/1.65  Generated:    5137
% 1.28/1.65  Kept:         2006
% 1.28/1.65  Inuse:        109
% 1.28/1.65  Deleted:      7
% 1.28/1.65  Deletedinuse: 2
% 1.28/1.65  
% 1.28/1.65  Resimplifying inuse:
% 1.28/1.65  Done
% 1.28/1.65  
% 1.28/1.65  Resimplifying inuse:
% 1.28/1.65  Done
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  Intermediate Status:
% 1.28/1.65  Generated:    9827
% 1.28/1.65  Kept:         4020
% 1.28/1.65  Inuse:        184
% 1.28/1.65  Deleted:      16
% 1.28/1.65  Deletedinuse: 6
% 1.28/1.65  
% 1.28/1.65  Resimplifying inuse:
% 1.28/1.65  Done
% 1.28/1.65  
% 1.28/1.65  Resimplifying inuse:
% 1.28/1.65  Done
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  Intermediate Status:
% 1.28/1.65  Generated:    13714
% 1.28/1.65  Kept:         6051
% 1.28/1.65  Inuse:        235
% 1.28/1.65  Deleted:      18
% 1.28/1.65  Deletedinuse: 6
% 1.28/1.65  
% 1.28/1.65  Resimplifying inuse:
% 1.28/1.65  Done
% 1.28/1.65  
% 1.28/1.65  Resimplifying inuse:
% 1.28/1.65  Done
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  Intermediate Status:
% 1.28/1.65  Generated:    18755
% 1.28/1.65  Kept:         8213
% 1.28/1.65  Inuse:        287
% 1.28/1.65  Deleted:      61
% 1.28/1.65  Deletedinuse: 47
% 1.28/1.65  
% 1.28/1.65  Resimplifying inuse:
% 1.28/1.65  Done
% 1.28/1.65  
% 1.28/1.65  Resimplifying inuse:
% 1.28/1.65  Done
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  Bliksems!, er is een bewijs:
% 1.28/1.65  % SZS status Unsatisfiable
% 1.28/1.65  % SZS output start Refutation
% 1.28/1.65  
% 1.28/1.65  clause( 4, [ ~( =( X, Y ) ), subclass( X, Y ) ] )
% 1.28/1.65  .
% 1.28/1.65  clause( 5, [ ~( subclass( X, Y ) ), ~( subclass( Y, X ) ), =( X, Y ) ] )
% 1.28/1.65  .
% 1.28/1.65  clause( 6, [ ~( member( X, 'unordered_pair'( Y, Z ) ) ), =( X, Y ), =( X, Z
% 1.28/1.65     ) ] )
% 1.28/1.65  .
% 1.28/1.65  clause( 10, [ =( 'unordered_pair'( X, X ), singleton( X ) ) ] )
% 1.28/1.65  .
% 1.28/1.65  clause( 90, [ member( y, singleton( x ) ) ] )
% 1.28/1.65  .
% 1.28/1.65  clause( 91, [ ~( =( y, x ) ) ] )
% 1.28/1.65  .
% 1.28/1.65  clause( 93, [ =( X, Y ), ~( member( X, singleton( Y ) ) ) ] )
% 1.28/1.65  .
% 1.28/1.65  clause( 122, [ =( X, Y ), ~( =( Y, X ) ) ] )
% 1.28/1.65  .
% 1.28/1.65  clause( 165, [ member( X, singleton( x ) ), ~( =( X, y ) ) ] )
% 1.28/1.65  .
% 1.28/1.65  clause( 170, [ ~( =( X, x ) ), ~( =( X, y ) ) ] )
% 1.28/1.65  .
% 1.28/1.65  clause( 10101, [ ~( =( X, y ) ) ] )
% 1.28/1.65  .
% 1.28/1.65  clause( 11198, [] )
% 1.28/1.65  .
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  % SZS output end Refutation
% 1.28/1.65  found a proof!
% 1.28/1.65  
% 1.28/1.65  % ABCDEFGHIJKLMNOPQRSTUVWXYZ
% 1.28/1.65  
% 1.28/1.65  initialclauses(
% 1.28/1.65  [ clause( 11200, [ ~( subclass( X, Y ) ), ~( member( Z, X ) ), member( Z, Y
% 1.28/1.65     ) ] )
% 1.28/1.65  , clause( 11201, [ member( 'not_subclass_element'( X, Y ), X ), subclass( X
% 1.28/1.65    , Y ) ] )
% 1.28/1.65  , clause( 11202, [ ~( member( 'not_subclass_element'( X, Y ), Y ) ), 
% 1.28/1.65    subclass( X, Y ) ] )
% 1.28/1.65  , clause( 11203, [ subclass( X, 'universal_class' ) ] )
% 1.28/1.65  , clause( 11204, [ ~( =( X, Y ) ), subclass( X, Y ) ] )
% 1.28/1.65  , clause( 11205, [ ~( =( X, Y ) ), subclass( Y, X ) ] )
% 1.28/1.65  , clause( 11206, [ ~( subclass( X, Y ) ), ~( subclass( Y, X ) ), =( X, Y )
% 1.28/1.65     ] )
% 1.28/1.65  , clause( 11207, [ ~( member( X, 'unordered_pair'( Y, Z ) ) ), =( X, Y ), 
% 1.28/1.65    =( X, Z ) ] )
% 1.28/1.65  , clause( 11208, [ ~( member( X, 'universal_class' ) ), member( X, 
% 1.28/1.65    'unordered_pair'( X, Y ) ) ] )
% 1.28/1.65  , clause( 11209, [ ~( member( X, 'universal_class' ) ), member( X, 
% 1.28/1.65    'unordered_pair'( Y, X ) ) ] )
% 1.28/1.65  , clause( 11210, [ member( 'unordered_pair'( X, Y ), 'universal_class' ) ]
% 1.28/1.65     )
% 1.28/1.65  , clause( 11211, [ =( 'unordered_pair'( X, X ), singleton( X ) ) ] )
% 1.28/1.65  , clause( 11212, [ =( 'unordered_pair'( singleton( X ), 'unordered_pair'( X
% 1.28/1.65    , singleton( Y ) ) ), 'ordered_pair'( X, Y ) ) ] )
% 1.28/1.65  , clause( 11213, [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( Z, T
% 1.28/1.65     ) ) ), member( X, Z ) ] )
% 1.28/1.65  , clause( 11214, [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( Z, T
% 1.28/1.65     ) ) ), member( Y, T ) ] )
% 1.28/1.65  , clause( 11215, [ ~( member( X, Y ) ), ~( member( Z, T ) ), member( 
% 1.28/1.65    'ordered_pair'( X, Z ), 'cross_product'( Y, T ) ) ] )
% 1.28/1.65  , clause( 11216, [ ~( member( X, 'cross_product'( Y, Z ) ) ), =( 
% 1.28/1.65    'ordered_pair'( first( X ), second( X ) ), X ) ] )
% 1.28/1.65  , clause( 11217, [ subclass( 'element_relation', 'cross_product'( 
% 1.28/1.65    'universal_class', 'universal_class' ) ) ] )
% 1.28/1.65  , clause( 11218, [ ~( member( 'ordered_pair'( X, Y ), 'element_relation' )
% 1.28/1.65     ), member( X, Y ) ] )
% 1.28/1.65  , clause( 11219, [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( 
% 1.28/1.65    'universal_class', 'universal_class' ) ) ), ~( member( X, Y ) ), member( 
% 1.28/1.65    'ordered_pair'( X, Y ), 'element_relation' ) ] )
% 1.28/1.65  , clause( 11220, [ ~( member( X, intersection( Y, Z ) ) ), member( X, Y ) ]
% 1.28/1.65     )
% 1.28/1.65  , clause( 11221, [ ~( member( X, intersection( Y, Z ) ) ), member( X, Z ) ]
% 1.28/1.65     )
% 1.28/1.65  , clause( 11222, [ ~( member( X, Y ) ), ~( member( X, Z ) ), member( X, 
% 1.28/1.65    intersection( Y, Z ) ) ] )
% 1.28/1.65  , clause( 11223, [ ~( member( X, complement( Y ) ) ), ~( member( X, Y ) ) ]
% 1.28/1.65     )
% 1.28/1.65  , clause( 11224, [ ~( member( X, 'universal_class' ) ), member( X, 
% 1.28/1.65    complement( Y ) ), member( X, Y ) ] )
% 1.28/1.65  , clause( 11225, [ =( complement( intersection( complement( X ), complement( 
% 1.28/1.65    Y ) ) ), union( X, Y ) ) ] )
% 1.28/1.65  , clause( 11226, [ =( intersection( complement( intersection( X, Y ) ), 
% 1.28/1.65    complement( intersection( complement( X ), complement( Y ) ) ) ), 
% 1.28/1.65    'symmetric_difference'( X, Y ) ) ] )
% 1.28/1.65  , clause( 11227, [ =( intersection( X, 'cross_product'( Y, Z ) ), restrict( 
% 1.28/1.65    X, Y, Z ) ) ] )
% 1.28/1.65  , clause( 11228, [ =( intersection( 'cross_product'( X, Y ), Z ), restrict( 
% 1.28/1.65    Z, X, Y ) ) ] )
% 1.28/1.65  , clause( 11229, [ ~( =( restrict( X, singleton( Y ), 'universal_class' ), 
% 1.28/1.65    'null_class' ) ), ~( member( Y, 'domain_of'( X ) ) ) ] )
% 1.28/1.65  , clause( 11230, [ ~( member( X, 'universal_class' ) ), =( restrict( Y, 
% 1.28/1.65    singleton( X ), 'universal_class' ), 'null_class' ), member( X, 
% 1.28/1.65    'domain_of'( Y ) ) ] )
% 1.28/1.65  , clause( 11231, [ subclass( rotate( X ), 'cross_product'( 'cross_product'( 
% 1.28/1.65    'universal_class', 'universal_class' ), 'universal_class' ) ) ] )
% 1.28/1.65  , clause( 11232, [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), 
% 1.28/1.65    rotate( T ) ) ), member( 'ordered_pair'( 'ordered_pair'( Y, Z ), X ), T )
% 1.28/1.65     ] )
% 1.28/1.65  , clause( 11233, [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), 
% 1.28/1.65    T ) ), ~( member( 'ordered_pair'( 'ordered_pair'( Z, X ), Y ), 
% 1.28/1.65    'cross_product'( 'cross_product'( 'universal_class', 'universal_class' )
% 1.28/1.65    , 'universal_class' ) ) ), member( 'ordered_pair'( 'ordered_pair'( Z, X )
% 1.28/1.65    , Y ), rotate( T ) ) ] )
% 1.28/1.65  , clause( 11234, [ subclass( flip( X ), 'cross_product'( 'cross_product'( 
% 1.28/1.65    'universal_class', 'universal_class' ), 'universal_class' ) ) ] )
% 1.28/1.65  , clause( 11235, [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), 
% 1.28/1.65    flip( T ) ) ), member( 'ordered_pair'( 'ordered_pair'( Y, X ), Z ), T ) ]
% 1.28/1.65     )
% 1.28/1.65  , clause( 11236, [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), 
% 1.28/1.65    T ) ), ~( member( 'ordered_pair'( 'ordered_pair'( Y, X ), Z ), 
% 1.28/1.65    'cross_product'( 'cross_product'( 'universal_class', 'universal_class' )
% 1.28/1.65    , 'universal_class' ) ) ), member( 'ordered_pair'( 'ordered_pair'( Y, X )
% 1.28/1.65    , Z ), flip( T ) ) ] )
% 1.28/1.65  , clause( 11237, [ =( 'domain_of'( flip( 'cross_product'( X, 
% 1.28/1.65    'universal_class' ) ) ), inverse( X ) ) ] )
% 1.28/1.65  , clause( 11238, [ =( 'domain_of'( inverse( X ) ), 'range_of'( X ) ) ] )
% 1.28/1.65  , clause( 11239, [ =( first( 'not_subclass_element'( restrict( X, Y, 
% 1.28/1.65    singleton( Z ) ), 'null_class' ) ), domain( X, Y, Z ) ) ] )
% 1.28/1.65  , clause( 11240, [ =( second( 'not_subclass_element'( restrict( X, 
% 1.28/1.65    singleton( Y ), Z ), 'null_class' ) ), range( X, Y, Z ) ) ] )
% 1.28/1.65  , clause( 11241, [ =( 'range_of'( restrict( X, Y, 'universal_class' ) ), 
% 1.28/1.65    image( X, Y ) ) ] )
% 1.28/1.65  , clause( 11242, [ =( union( X, singleton( X ) ), successor( X ) ) ] )
% 1.28/1.65  , clause( 11243, [ subclass( 'successor_relation', 'cross_product'( 
% 1.28/1.65    'universal_class', 'universal_class' ) ) ] )
% 1.28/1.65  , clause( 11244, [ ~( member( 'ordered_pair'( X, Y ), 'successor_relation'
% 1.28/1.65     ) ), =( successor( X ), Y ) ] )
% 1.28/1.65  , clause( 11245, [ ~( =( successor( X ), Y ) ), ~( member( 'ordered_pair'( 
% 1.28/1.65    X, Y ), 'cross_product'( 'universal_class', 'universal_class' ) ) ), 
% 1.28/1.65    member( 'ordered_pair'( X, Y ), 'successor_relation' ) ] )
% 1.28/1.65  , clause( 11246, [ ~( inductive( X ) ), member( 'null_class', X ) ] )
% 1.28/1.65  , clause( 11247, [ ~( inductive( X ) ), subclass( image( 
% 1.28/1.65    'successor_relation', X ), X ) ] )
% 1.28/1.65  , clause( 11248, [ ~( member( 'null_class', X ) ), ~( subclass( image( 
% 1.28/1.65    'successor_relation', X ), X ) ), inductive( X ) ] )
% 1.28/1.65  , clause( 11249, [ inductive( omega ) ] )
% 1.28/1.65  , clause( 11250, [ ~( inductive( X ) ), subclass( omega, X ) ] )
% 1.28/1.65  , clause( 11251, [ member( omega, 'universal_class' ) ] )
% 1.28/1.65  , clause( 11252, [ =( 'domain_of'( restrict( 'element_relation', 
% 1.28/1.65    'universal_class', X ) ), 'sum_class'( X ) ) ] )
% 1.28/1.65  , clause( 11253, [ ~( member( X, 'universal_class' ) ), member( 'sum_class'( 
% 1.28/1.65    X ), 'universal_class' ) ] )
% 1.28/1.65  , clause( 11254, [ =( complement( image( 'element_relation', complement( X
% 1.28/1.65     ) ) ), 'power_class'( X ) ) ] )
% 1.28/1.65  , clause( 11255, [ ~( member( X, 'universal_class' ) ), member( 
% 1.28/1.65    'power_class'( X ), 'universal_class' ) ] )
% 1.28/1.65  , clause( 11256, [ subclass( compose( X, Y ), 'cross_product'( 
% 1.28/1.65    'universal_class', 'universal_class' ) ) ] )
% 1.28/1.65  , clause( 11257, [ ~( member( 'ordered_pair'( X, Y ), compose( Z, T ) ) ), 
% 1.28/1.65    member( Y, image( Z, image( T, singleton( X ) ) ) ) ] )
% 1.28/1.65  , clause( 11258, [ ~( member( X, image( Y, image( Z, singleton( T ) ) ) ) )
% 1.28/1.65    , ~( member( 'ordered_pair'( T, X ), 'cross_product'( 'universal_class', 
% 1.28/1.65    'universal_class' ) ) ), member( 'ordered_pair'( T, X ), compose( Y, Z )
% 1.28/1.65     ) ] )
% 1.28/1.65  , clause( 11259, [ ~( 'single_valued_class'( X ) ), subclass( compose( X, 
% 1.28/1.65    inverse( X ) ), 'identity_relation' ) ] )
% 1.28/1.65  , clause( 11260, [ ~( subclass( compose( X, inverse( X ) ), 
% 1.28/1.65    'identity_relation' ) ), 'single_valued_class'( X ) ] )
% 1.28/1.65  , clause( 11261, [ ~( function( X ) ), subclass( X, 'cross_product'( 
% 1.28/1.65    'universal_class', 'universal_class' ) ) ] )
% 1.28/1.65  , clause( 11262, [ ~( function( X ) ), subclass( compose( X, inverse( X ) )
% 1.28/1.65    , 'identity_relation' ) ] )
% 1.28/1.65  , clause( 11263, [ ~( subclass( X, 'cross_product'( 'universal_class', 
% 1.28/1.65    'universal_class' ) ) ), ~( subclass( compose( X, inverse( X ) ), 
% 1.28/1.65    'identity_relation' ) ), function( X ) ] )
% 1.28/1.65  , clause( 11264, [ ~( function( X ) ), ~( member( Y, 'universal_class' ) )
% 1.28/1.65    , member( image( X, Y ), 'universal_class' ) ] )
% 1.28/1.65  , clause( 11265, [ =( X, 'null_class' ), member( regular( X ), X ) ] )
% 1.28/1.65  , clause( 11266, [ =( X, 'null_class' ), =( intersection( X, regular( X ) )
% 1.28/1.65    , 'null_class' ) ] )
% 1.28/1.65  , clause( 11267, [ =( 'sum_class'( image( X, singleton( Y ) ) ), apply( X, 
% 1.28/1.65    Y ) ) ] )
% 1.28/1.65  , clause( 11268, [ function( choice ) ] )
% 1.28/1.65  , clause( 11269, [ ~( member( X, 'universal_class' ) ), =( X, 'null_class'
% 1.28/1.65     ), member( apply( choice, X ), X ) ] )
% 1.28/1.65  , clause( 11270, [ ~( 'one_to_one'( X ) ), function( X ) ] )
% 1.28/1.65  , clause( 11271, [ ~( 'one_to_one'( X ) ), function( inverse( X ) ) ] )
% 1.28/1.65  , clause( 11272, [ ~( function( inverse( X ) ) ), ~( function( X ) ), 
% 1.28/1.65    'one_to_one'( X ) ] )
% 1.28/1.65  , clause( 11273, [ =( intersection( 'cross_product'( 'universal_class', 
% 1.28/1.65    'universal_class' ), intersection( 'cross_product'( 'universal_class', 
% 1.28/1.65    'universal_class' ), complement( compose( complement( 'element_relation'
% 1.28/1.65     ), inverse( 'element_relation' ) ) ) ) ), 'subset_relation' ) ] )
% 1.28/1.65  , clause( 11274, [ =( intersection( inverse( 'subset_relation' ), 
% 1.28/1.65    'subset_relation' ), 'identity_relation' ) ] )
% 1.28/1.65  , clause( 11275, [ =( complement( 'domain_of'( intersection( X, 
% 1.28/1.65    'identity_relation' ) ) ), diagonalise( X ) ) ] )
% 1.28/1.65  , clause( 11276, [ =( intersection( 'domain_of'( X ), diagonalise( compose( 
% 1.28/1.65    inverse( 'element_relation' ), X ) ) ), cantor( X ) ) ] )
% 1.28/1.65  , clause( 11277, [ ~( operation( X ) ), function( X ) ] )
% 1.28/1.65  , clause( 11278, [ ~( operation( X ) ), =( 'cross_product'( 'domain_of'( 
% 1.28/1.65    'domain_of'( X ) ), 'domain_of'( 'domain_of'( X ) ) ), 'domain_of'( X ) )
% 1.28/1.65     ] )
% 1.28/1.65  , clause( 11279, [ ~( operation( X ) ), subclass( 'range_of'( X ), 
% 1.28/1.65    'domain_of'( 'domain_of'( X ) ) ) ] )
% 1.28/1.65  , clause( 11280, [ ~( function( X ) ), ~( =( 'cross_product'( 'domain_of'( 
% 1.28/1.65    'domain_of'( X ) ), 'domain_of'( 'domain_of'( X ) ) ), 'domain_of'( X ) )
% 1.28/1.65     ), ~( subclass( 'range_of'( X ), 'domain_of'( 'domain_of'( X ) ) ) ), 
% 1.28/1.65    operation( X ) ] )
% 1.28/1.65  , clause( 11281, [ ~( compatible( X, Y, Z ) ), function( X ) ] )
% 1.28/1.65  , clause( 11282, [ ~( compatible( X, Y, Z ) ), =( 'domain_of'( 'domain_of'( 
% 1.28/1.65    Y ) ), 'domain_of'( X ) ) ] )
% 1.28/1.65  , clause( 11283, [ ~( compatible( X, Y, Z ) ), subclass( 'range_of'( X ), 
% 1.28/1.65    'domain_of'( 'domain_of'( Z ) ) ) ] )
% 1.28/1.65  , clause( 11284, [ ~( function( X ) ), ~( =( 'domain_of'( 'domain_of'( Y )
% 1.28/1.65     ), 'domain_of'( X ) ) ), ~( subclass( 'range_of'( X ), 'domain_of'( 
% 1.28/1.65    'domain_of'( Z ) ) ) ), compatible( X, Y, Z ) ] )
% 1.28/1.65  , clause( 11285, [ ~( homomorphism( X, Y, Z ) ), operation( Y ) ] )
% 1.28/1.65  , clause( 11286, [ ~( homomorphism( X, Y, Z ) ), operation( Z ) ] )
% 1.28/1.65  , clause( 11287, [ ~( homomorphism( X, Y, Z ) ), compatible( X, Y, Z ) ] )
% 1.28/1.65  , clause( 11288, [ ~( homomorphism( X, Y, Z ) ), ~( member( 'ordered_pair'( 
% 1.28/1.65    T, U ), 'domain_of'( Y ) ) ), =( apply( Z, 'ordered_pair'( apply( X, T )
% 1.28/1.65    , apply( X, U ) ) ), apply( X, apply( Y, 'ordered_pair'( T, U ) ) ) ) ]
% 1.28/1.65     )
% 1.28/1.65  , clause( 11289, [ ~( operation( X ) ), ~( operation( Y ) ), ~( compatible( 
% 1.28/1.65    Z, X, Y ) ), member( 'ordered_pair'( 'not_homomorphism1'( Z, X, Y ), 
% 1.28/1.65    'not_homomorphism2'( Z, X, Y ) ), 'domain_of'( X ) ), homomorphism( Z, X
% 1.28/1.65    , Y ) ] )
% 1.28/1.65  , clause( 11290, [ ~( operation( X ) ), ~( operation( Y ) ), ~( compatible( 
% 1.28/1.65    Z, X, Y ) ), ~( =( apply( Y, 'ordered_pair'( apply( Z, 
% 1.28/1.65    'not_homomorphism1'( Z, X, Y ) ), apply( Z, 'not_homomorphism2'( Z, X, Y
% 1.28/1.65     ) ) ) ), apply( Z, apply( X, 'ordered_pair'( 'not_homomorphism1'( Z, X, 
% 1.28/1.65    Y ), 'not_homomorphism2'( Z, X, Y ) ) ) ) ) ), homomorphism( Z, X, Y ) ]
% 1.28/1.65     )
% 1.28/1.65  , clause( 11291, [ member( y, singleton( x ) ) ] )
% 1.28/1.65  , clause( 11292, [ ~( =( y, x ) ) ] )
% 1.28/1.65  ] ).
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  subsumption(
% 1.28/1.65  clause( 4, [ ~( =( X, Y ) ), subclass( X, Y ) ] )
% 1.28/1.65  , clause( 11204, [ ~( =( X, Y ) ), subclass( X, Y ) ] )
% 1.28/1.65  , substitution( 0, [ :=( X, X ), :=( Y, Y )] ), permutation( 0, [ ==>( 0, 0
% 1.28/1.65     ), ==>( 1, 1 )] ) ).
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  subsumption(
% 1.28/1.65  clause( 5, [ ~( subclass( X, Y ) ), ~( subclass( Y, X ) ), =( X, Y ) ] )
% 1.28/1.65  , clause( 11206, [ ~( subclass( X, Y ) ), ~( subclass( Y, X ) ), =( X, Y )
% 1.28/1.65     ] )
% 1.28/1.65  , substitution( 0, [ :=( X, X ), :=( Y, Y )] ), permutation( 0, [ ==>( 0, 0
% 1.28/1.65     ), ==>( 1, 1 ), ==>( 2, 2 )] ) ).
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  subsumption(
% 1.28/1.65  clause( 6, [ ~( member( X, 'unordered_pair'( Y, Z ) ) ), =( X, Y ), =( X, Z
% 1.28/1.65     ) ] )
% 1.28/1.65  , clause( 11207, [ ~( member( X, 'unordered_pair'( Y, Z ) ) ), =( X, Y ), 
% 1.28/1.65    =( X, Z ) ] )
% 1.28/1.65  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z )] ), 
% 1.28/1.65    permutation( 0, [ ==>( 0, 0 ), ==>( 1, 1 ), ==>( 2, 2 )] ) ).
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  subsumption(
% 1.28/1.65  clause( 10, [ =( 'unordered_pair'( X, X ), singleton( X ) ) ] )
% 1.28/1.65  , clause( 11211, [ =( 'unordered_pair'( X, X ), singleton( X ) ) ] )
% 1.28/1.65  , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  subsumption(
% 1.28/1.65  clause( 90, [ member( y, singleton( x ) ) ] )
% 1.28/1.65  , clause( 11291, [ member( y, singleton( x ) ) ] )
% 1.28/1.65  , substitution( 0, [] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  subsumption(
% 1.28/1.65  clause( 91, [ ~( =( y, x ) ) ] )
% 1.28/1.65  , clause( 11292, [ ~( =( y, x ) ) ] )
% 1.28/1.65  , substitution( 0, [] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  factor(
% 1.28/1.65  clause( 11421, [ ~( member( X, 'unordered_pair'( Y, Y ) ) ), =( X, Y ) ] )
% 1.28/1.65  , clause( 6, [ ~( member( X, 'unordered_pair'( Y, Z ) ) ), =( X, Y ), =( X
% 1.28/1.65    , Z ) ] )
% 1.28/1.65  , 1, 2, substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Y )] )).
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  paramod(
% 1.28/1.65  clause( 11422, [ ~( member( X, singleton( Y ) ) ), =( X, Y ) ] )
% 1.28/1.65  , clause( 10, [ =( 'unordered_pair'( X, X ), singleton( X ) ) ] )
% 1.28/1.65  , 0, clause( 11421, [ ~( member( X, 'unordered_pair'( Y, Y ) ) ), =( X, Y )
% 1.28/1.65     ] )
% 1.28/1.65  , 0, 3, substitution( 0, [ :=( X, Y )] ), substitution( 1, [ :=( X, X ), 
% 1.28/1.65    :=( Y, Y )] )).
% 1.28/1.65  
% 1.28/1.65  
% 1.28/1.65  subsumption(
% 1.28/1.65  clause( 93, [ =( X, Y ), ~( member( X, singleton( Y ) ) ) ] )
% 1.28/1.65  , clause( 11422, [ ~( member( X, singleton( Y ) ) ), =( X, Y ) ] )
% 1.28/1.65  , suCputime limit exceeded (core dumped)
%------------------------------------------------------------------------------